Lakes / Montana / Cascade County
Lakes in Cascade County, Montana
14 lakes counted in Cascade County - the largest is Benton Lake at 2,699.9 acres.
14
Lakes Counted
2,699.9 acres
Largest - Benton Lake
Cascade County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Benton Lake | Cascade | 2,699.9 acres | - |
| 2 | Benton Lake | Cascade | 854.9 acres | - |
| 3 | Benton Lake | Cascade | 766.1 acres | - |
| 4 | Benton Lake | Cascade | 560.2 acres | - |
| 5 | Black Horse Lake | Cascade | 426 acres | - |
| 6 | Benton Lake | Cascade | 362 acres | - |
| 7 | Benton Lake | Cascade | 240.7 acres | - |
| 8 | Schrammeck Lake | Cascade | 207.3 acres | - |
| 9 | Black Horse Lake | Cascade | 149.7 acres | - |
| 10 | Rocky Reef Reservoir | Cascade | 136.2 acres | - |
| 11 | Middle Creek Lake | Cascade | 41.3 acres | - |
| 12 | Gollaher Reservoir | Cascade | 38 acres | About 18 ft |
| 13 | Rocky Reef Reservoir | Cascade | 30.6 acres | - |
| 14 | Hound Creek Reservoir | Cascade | 23 acres | About 35 ft |
Sources: Montana Fish, Wildlife & Parks lake data; USGS. Verified October 30, 2026.